Mechanical Compression Springs



Belleville Springs

Belleville Springs

Extension Springs

CI Internal Product
Belleville Spring Washers

CE External Product
Belleville Spring Washers

AI Internal Product
Belleville Spring Washers

AE External Product
Belleville Spring Washers

AMI Internal Product
Belleville Spring Washers

AME External Product
Belleville Spring Washers

AHI Internal Product
Belleville Spring Washers

AHE External Product
Belleville Spring Washers

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Stock sizes in Carbon Spring Steel
SPEC retaining rings are specially suited for retaining mating component parts. Typical applications include power transmission assemblies, pneumatic and hydraulic cylinders, bearing retainment, shaft retainment, as well as many other uses.

Sizes other than those listed are available as a special run. Delivery depends on availability of raw material.

Material
Spring Steel.
Commercial - SAE 1070-1090
Military - MIL-S-46049
No charge for certification of compliance when requested; certificate of chemical analysis available, See Price Book.
High carbon rings are not recommended for applications where the temperature exceeds 250 Deg. F. (121 Deg. C).

Finishes
Standard finish is that of the normal wire. Plated finishes furnished on request.

Installation
SPEC Retaining Rings are designed to be installed into a groove by inserting the end of the ring into the groove and then working the immediate coil into the groove. Continue around the ring until fully installed and properly seated.

Applications Cosiderations
Thrust load is a maximum force that can be applied to the ring without the ring material shearing. To approach this level of thrust load the groove must be sharp, with minimal diameter clearance between retained components, and the load applied uniformly to the load surface of the ring.

In most cases the load carrying capacity of the groove is less than the ring due to lower tensile strengths of the groove material. For additional information regarding thrust loads contact our Engineering Department

Factors that can have an effect on thrust load include: Radii and Chamfer of groove - generally the larger the radii or the chamfer the lower the load.

Centrifugal force on shaft installations could cause the ring diameter to grow on external applications which results in less retaining surface within the groove. Contact Engineering Department for additional information.

Rotation of mating parts can dislodge the ring. If the application requires rotation we suggest contacting our Engineering Department.

Yield strength - This pertains to both the yield strength in compression of the groove as well as that of the ring. Three failure combinations can occur.

Groove Deformation - The yield strength of the groove is less than that of the ring.

Ring Failure - The yield strength of the groove is greater than the yield strength of the ring. The result is the shearing of the radial section of the ring material.

Combination Failure - This condition occurs when the groove yield and the ring yield strengths are similar.

Stock Ring Configuration & Duties

Light duty single coil retaining rings are installed in applications where light axial retainment is required. A single notched end is supplied for removal.

CI Internal Product

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Medium duty multiple coil retaining rings are designed to handle medium thrust loads. When specified in advance these rings can meet Aerospace and Military standards.

AI Internal Product

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Medium duty multiple coil rings give the user thrust loads which approach the heavy duty series while maintaining the ease of assembly similar to the medium duty series. This series fits national aircraft standard grooves. (NAS 50-51)

AMI Internal Product

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AME External Product

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Heavy duty multiple coil rings are designed for high thrust loads. These rings will fit industry standard grooves and can be substituted for stamped retaining rings. Breakage from stamped rings is eliminated by substituting this series. When specified in advance these rings can meet aircraft and Military specifications.

AHI Internal Product

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AHE External Product

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Extension Springs